I purchased this here, but it seems to fit my child a little too well, so they don't seem to want to wear it. I'm offering it to someone who can use it. It was listed as 【Size unknown, 80cm】, but my child currently weighs 10.3kg and usually wears 80cm, and it fit snugly. So, my feeling is that it's probably around 70cm. It's barely wearable, so it might be around 70-80cm. Length: Approximately 27.5cm Width: Approximately 26.5cm ↑ Please use these as a guide. Please purchase with your understanding.